Drawing No. :- TPC127a
Issue :- 1
Date :- 26/06/03
ROUTINE MAINTENANCE
WARNING: ENSURE THAT THE POWER CORD TO THE MACHINE
HAS BEEN DISCONNECTED BEFORE CARRYING OUT
ROUTINE MAINTENANCE ON ITEMS 1, 2, 4, 5, AND 6.
To ensure continued full efficiency of the dehumidifier, maintenance procedures should be
performed as follows:
1. Clean the surface of the evaporator and condenser coils by blowing the dirt out from
behind the fins with compressed air. Hold the nozzle of the air hose away from the
coil (approx 6”) to avoid damaging the fins. Alternatively, vacuum clean the coils.
WARNING: DO NOT STEAM CLEAN REFRIGERATION COILS.
2. Check that the fan is firmly secured to the motor shaft and that the fan rotates freely.
THE FAN IS SEALED FOR LIFE AND DOES NOT NEED LUBRICATING.
3. To check the refrigerant charge, run the unit for 15 minutes (with humidistat set to
maximum) and briefly remove the cover. The evaporator coil should be evenly frost
coated across its surface. At temperatures above 20°C, the coil may be covered with
droplets of water rather than frost. Partial frosting accompanied by frosting of the
thin capillary tubes, indicates loss of refrigerant gas or low charge.
4. Check all wiring connections.
5. The bolts retaining the compressor and fan should be inspected to ensure they have
not become loose. Check the insulation sleeves on the refrigeration Pipework have
not become detached.
6. Inspect the drain tray for water marking. If marking is excessive check the drain pipe
for blockage.
7. To check the operation of the defrost system, switch the machine on and leave it
running for approximately 55 minutes in temperatures below 20°C. The machine will
then enter defrost mode for approximately 5 minutes, before returning to normal
operation. If the unit will not defrost, replace the printed circuit board. If the
machine is still not defrosting, replace the by-pass valve. Check the machine again
after a further hour of operation to determine that the valve is working correctly.
IF ANY OF THE PRECEDING PROBLEMS OCCUR,CONTACT THE EBAC SERVICE CENTER
PRIOR TO CONTINUED OPERATION OF THE UNIT TO PREVENT PERMANENT DAMAGE.
CD425 OWNERS MANUAL
